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Calculator Transmitter activated by a voice STRC-305

Introduction

When a conversation needs to be intercepted, and you do not know when the conversation will start, it makes sense to use a voice activated transmitter. The benefit of voice activation is that you do not risk losing power to the batteries of a room transmitter that may be on for hours.

RF surveillance is secretive with the calculator transmitter, consisting of working radio frequency transmitter built into a functioning desktop calculator.

The calculator works as usual and nothing unusual can be found. It transmits conversations to a distant receiver with crystal clarity. The built-in transmitter is powered by the own batteries. Voice activation system makes the battery lifetime very long. Exceptional audio quality.

The voice activated calculator transmitter does not have any differences from the conventional calculator from the store because this listening device does not have any external switch, in contrast to similar products that are distributed in the market. This bugging device can be left on a table or counter, and moved from room to room, operating freely in an office environment where no one would suspect a calculator is housing a radio frequency transmitter.

This covert audio mini transmitter has two operating modes: work with voice activation and operation of the non-voice activated as a normal transmitter. Switching between the two modes by using the buttons calculator secret key sequence.

Our bugging device has its own battery and will not discharge the primary battery.

Calculator Transmitter activated by a voice STRC-305

Specification:

Frequency Band: UHF
Output power: +3dBm
Modulation: WFM   
Power Supply: 5 x CR2032
Antenna:    built-in
Microphone: built-in, Knowles
Dimensions: 195 x 143 x 36 mm
Operation time: 20 hours

Features:

  • Has two operating modes
  • Voice Activated Control mode
  • Regular mode
  • Easy activating/deactivating of the transmitter
  • The calculator looks and works as usual !
  • Does not have any external switch
  • Switching between the two modes by using the buttons calculator secret key sequence
  • Long battery lifetime.
  • The built-in transmitter is powered by the own batteries and will not discharge the primary battery
  • Voice activation system starts transmission only on voice signal detection to maximize battery lifetime
  • Extremely sensitive built-in microphone.
  • Crystal frequency control

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